GOOGL, AMZN, and PYPL maintain investments in public and private companies not necessarily core to their businesses, says David Trainer of New Constructs. He cautions investors that it is important to truly understand company financials, including Alphabet (GOOGL), Amazon (AMZN), and PayPal (PYPL). He explains that investment in other private and public companies can artificially boost overall profits. He says that up to 20% of Alphabet's earnings came from non-core business. Tune in for this thought provoking discussion.